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Is the skill of rev matching being lost to computers?

If the ability to drive a vehicle equipped with a manual gearbox is becoming a lost art, then the skill of being able to match revs on downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. The usefulness of rev matching in street driving is limited most of the time – aside from sounding cool and impressing your friends. But out on a race track or the occasional fast, windy road, its benefits are abundantly clear. While in motion, the engine speed and wheel speed of a vehicle with a manual transmission are kept in sync when the clutch is engaged (i.e. when the clutch pedal is not being pressed down). However, when changing gear, that mechanical link is severed briefly, and the synchronization between the motor and wheels is broken. When upshifting during acceleration, this isn't much of an issue, as there's typically not a huge disparity between engine speed and wheel speed as a car accelerates. Rev-matching downshifts is the stuff they would teach at the automotive equivalent of the Shaolin Temple. But when slowing down and downshifting – as you might do when approaching a corner at a high rate of speed – that gap of time caused by the disengagement of the clutch from the engine causes the revs to drop. Without bringing up the revs somehow to help the engine speed match the wheel speed in the gear you're about to use, you'll typically get a sudden jolt when re-engaging the clutch as physics brings everything back into sync. That jolt can be a big problem when you're moving along swiftly, causing instability or even a loss of traction, particularly in rear-wheel-drive cars. So the point of rev matching is to blip the throttle simultaneously as you downshift gears in order to bring the engine speed to a closer match with the wheel speed before you re-engage the clutch in that lower gear, in turn providing a much smoother downshift. When braking is thrown in, you get heel-toe downshifting, which involves some dexterity to use all three pedals at the same time with just two feet – clutch in, slow the car while revving, clutch out. However, even if you're aware of heel-toe technique and the basic elements of how to perform a rev match, perfecting it to the point of making it useful can be difficult.

GM recalling 426,000 sedans over faulty transmission shift cable

General Motors is recalling some 426,240 sedans that may have a faulty transmission shift cable, according to a National Highway Traffic Safety Administration report this morning. The recall concerns a fault within four-speed automatic transmissions equipped on 2007-2010 Saturn Aura models, and 2008-2010 Chevrolet Malibu and Pontiac G6 models.
The report specifies that tabs on the transmission shift cable may fracture and separate. Such a fault could cause a discrepancy between the actual position of the transmission and the apparent position of the shift lever.
GM is currently working to notify owners of the vehicles in question, and dealers will check and replace shift cables free of charge. Scroll down to read the complete NHTSA report.

Chevy gives Camaro Red, Black Accents for SEMA

Just the other day, Chevy announced a series of modified show cars it's planning to bring to SEMA this year. Now it has revealed full details on what could prove the most enticing among them in the form of a pair of Camaros. These new Red Accent and Black Accent editions are based on the new, sixth-generation 2016 Camaro SS. The former starts out as a Camaro SS convertible, done up in silver with red trim inside and out. It's got a leather interior, custom grille, hash-mark fender graphics, blacked-out bowtie badge, and 20-inch alloys. Even the engine is visually enhanced with a red cover. While it was at it, Chevy also dropped the suspension and fitted a new air intake and Brembo front brakes. Joining it is the Black Accent concept, based on a red Camaro SS coupe. As its name suggests, it's got a blacked-out aero kit, bowtie badge, and fuel cover, along with darkened tailllamps and satin black stripes. It also gets a black leather interior and its own set of 20-inch wheels, along with the aforementioned lowering kit, Brembo front brakes, air intake, and red engine cover. The Accent concepts are designed to showcase the extent of the accessories Chevy is offering for the new Camaro, and will be showcased at SEMA alongside modified versions of the Spark, Trax, Malibu, Colorado, and Sierra. Feel free to scope out the gallery above and the details in the press release below. Related Video: 2016 Camaro SS Concepts Designed to Inspire Red, Black Accent cars showcase new accessories, preview production packages DETROIT – Chevrolet introduced two customized 2016 Camaro SS concepts that illustrate the possibilities enabled by the new portfolio of Gen Six Camaro accessories and performance parts. Dubbed Red Accent and Black Accent for their respective design themes, each uses components Chevrolet will offer during the first model year of the new Camaro. "These are great-looking examples of what customers can do to personalize their new Gen Six Camaro," said Roger McCormack, director, Accessories & Performance Parts Marketing. "This will be the largest-ever portfolio of Camaro accessories and performance parts.